Navigation Links
Macadamia nuts can be included in heart healthy diet
Date:4/11/2008

Macadamia nuts included in a heart healthy diet reduced low-density cholesterol (bad cholesterol) and should be included among nuts with qualified health claims, according to researchers.

"We looked at macadamia nuts because they are not currently included in the health claim for tree nuts, while other tree nuts are currently recommended as part of a heart healthy diet," says Dr. Amy E. Griel, a recent Penn State Ph.D. recipient in nutrition and now senior nutrition scientist at The Hershey Company. "Macadamia nuts have higher levels of monosaturated fats, like those found in olive oil compared with other tree nuts."

Along with Brazil nuts and cashews, macadamia nuts are not included in the U.S. Food and Drug Administration's list of nuts with qualified health claims because the cut-off point is 4 grams of saturated fat per 50 grams of nuts. Macadamia nuts have 6 grams of saturated fat per 50 grams, cashew nuts have 4.6 grams and Brazil nuts have 7.6 grams of saturated fat per 50 grams of nuts.

"Epidemiological studies showed that people who are frequent nut consumers have decreased risk of heart disease," says Penny Kris-Etherton, co-author and distinguished professor of nutritional sciences.

The researchers used a controlled feeding study to compare a heart-healthy diet with 1.5 ounces a small handful of macadamia nuts to a standard American diet. The participants had slightly elevated cholesterol levels, normal blood pressure and were not taking lipid-lowering drugs. Researchers randomly assigned participants to either the macadamia nut diet or the standard American diet and provided all meals for the participants for five weeks. The participants then switched diets and continued eating only food provided by the researchers for another five weeks.

The Healthy Heart diet with macadamia nuts did reduce total cholesterol, low-density lipoprotein cholesterol and triglyceride levels compared with the standard American diet. The researchers reported in the current issue of the Journal of Nutrition, that the macadamia nuts reduced total cholesterol by 9.4 percent and low-density lipoprotein by 8.9 percent.

Individual calorie levels were used for each participant so that they did not gain or lose weight during the study. Both diets were matched for total fat, containing 33 percent calories from total fat. The Heart Healthy diet with macadamia nuts had 7 percent saturated fat, 18 percent monosaturated fat and 5 percent polyunsaturated fat. The standard American diet had 13 percent saturated fat, 11 percent monosaturated fat and 5 percent saturated fat.

"We found that the reduction in LDL or bad cholesterol we observed was greater than would be predicted by just the healthy fats in the nuts alone," says Griel. "This indicates that there is something else in the nuts that helps lower cholesterol."

The macadamia nut diet included macadamia nuts as a snack, mixed into meals, as a salad topping and in cookies and muffins. The total fat was the same in both diets. Macadamia nuts were substituted for other sources of fat and protein in the diet. Switching skim milk for 2 percent milk and adding some macadamia nuts kept fat levels even.

"I think the bottom line is that Macadamia nuts probably should be included in the list of nuts to have a qualified health claim," says Kris-Etherton.


'/>"/>

Contact: A'ndrea Elyse Messer
aem1@psu.edu
814-865-9481
Penn State
Source:Eurekalert

Related biology news :

1. Pitt and University of Chicago researchers uncover process behind heart muscle contraction
2. Power of molecular imaging reveals secrets of the heart
3. Nutrition research unveiled this week shows pistachios are smart for the heart
4. Exercise during pregnancy leads to a healthier heart in moms- and babies-to-be
5. Childrens Hospital leads projects to develop nations first heart assist devices for young children
6. A stronger heart with flavonoids
7. New study shows low-fat diets more likely to reduce risk of heart disease than low-carb diets
8. Taking the fight against cancer to heart
9. New book gives a human face to children with congenital heart disease
10. Carbon monoxide may cause long-lasting heart damage
11. Worlds biggest heart model simulated at Université de Montréal
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/27/2016)... June 27, 2016 Research and Markets has ... 2016-2020" report to their offering. ... America to grow at a CAGR of 12.28% during ... based on an in-depth market analysis with inputs from industry experts. ... the coming years. The report also includes a discussion of the ...
(Date:6/22/2016)... , June 22, 2016  The American College of Medical ... Show Executive Magazine as one of the fastest-growing trade ... 25-27 at the Bellagio in Las Vegas ... highest percentage of growth in each of the following categories: ... companies and number of attendees. The 2015 ACMG Annual Meeting ...
(Date:6/22/2016)... 22, 2016   Acuant , the ... solutions, has partnered with RightCrowd ® ... Visitor Management, Self-Service Kiosks and Continuous Workforce ... add functional enhancements to existing physical access ... venues with an automated ID verification and ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... 23, 2016   EpiBiome , a precision microbiome ... in debt financing from Silicon Valley Bank (SVB). The ... to advance its drug development efforts, as well as ... "SVB has been an incredible strategic partner to ... traditional bank would provide," said Dr. Aeron Tynes ...
(Date:6/23/2016)... Apellis Pharmaceuticals, Inc. today announced positive ... its complement C3 inhibitor, APL-2. The trials were ... studies designed to assess the safety, tolerability, pharmacokinetics ... healthy adult volunteers. Forty subjects were ... dose (ranging from 45 to 1,440mg) or repeated ...
(Date:6/23/2016)... ... June 23, 2016 , ... ... at the Pennsylvania Convention Center and will showcase its product’s latest features from ... also be presenting a scientific poster on Disrupting Clinical Trials in The Cloud ...
(Date:6/23/2016)... India , June 23, 2016 ... media market research report to its pharmaceuticals section ... profiles, product details and much more. ... spread across 151 pages, profiling 15 companies and ... available at http://www.reportsnreports.com/reports/601420-global-cell-culture-media-industry-2016-market-research-report.html . ...
Breaking Biology Technology: